@article{05490658,
title = {Folding on the Cartesian product of manifolds and their fundamental group.},
journal = {APPS. Applied Sciences},
volume = {9},
year = {2007},
pages = {86-91},
zbl = {1154.57300},
language = {en},
url = {http://dml.mathdoc.fr/item/05490658}
}
El-Ghoul, M.; El-Ahmady, A.E.; Abu-Saleem, M. Folding on the Cartesian product of manifolds and their fundamental group.. APPS. Applied Sciences, Tome 9 (2007) pp. 86-91. http://gdmltest.u-ga.fr/item/05490658/